Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG528208181

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG528208181

Diamond specifications and retailer prices

From £266 GBP
$357 USD
As of October 30, 2026
Save £1,308 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,575 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG528208181 or 528208181. Listed at 14 retailers as of October 30, 2026, with prices from £266 to £1,575, a £1,308 spread on the same certified stone. Do Amore Diamonds lists it at £1,575. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528208181
Dimensions8.41 × 5.70 × 3.84 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.41 mm5.70 mm1.55 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528208181
Side View
Table 65.5%Crown 42°Girdle: MediumPavilion 35.7°Culet: NoneDepth 67.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,575 GBP|Low: £233 GBP|High: £8,792 GBP|Avg: £1,753 GBP|+30.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4£266 GBP
Retailer 7£344 GBP
Retailer 2£426 GBP
Retailer 5£450 GBP
Retailer 6£849 GBP
Retailer 3£904 GBP
Do Amore Diamonds£1,575 GBP
Retailer 8£8,792 GBP

42 data points across 8 retailers

14 retailers£266 GBP to £1,575 GBP

Retailer 1
-
£160 GBP
$215 USD
Price last confirmed 13 days ago
Retailer 2
-
£187 GBP
$250 USD
View
Price last confirmed 16 days ago
Retailer 3
-
£199 GBP
$267 USD
View
Price last confirmed 14 days ago
Retailer 4
-
£199 GBP
$267 USD
View
Price last confirmed 12 days ago
B
Retailer 5
-
£266 GBP
$357 USD
View
B+
Retailer 6
-
£344 GBP
€439 EUR
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£426 GBP
View
B+
Retailer 8
-
£450 GBP
$603 USD
View
B
Retailer 9
-
£558 GBP
View
Retailer 10
-
£708 GBP
$948 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
£849 GBP
$1,138 USD
View
B
Retailer 12
-
£904 GBP
View
C
Retailer 13
-
£1,239 GBP
$1,660 USD
View
Most Expensive
C
Do Amore Diamonds
27-41C0A660E · Oct 30
£1,575 GBP
$2,110 USD
View
13 more retailers have this diamond
Prices start from £266 GBPSave up to £1,308 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.55ct Radiant
£266 GBP